Milking-machine.



B. M. ASLAKSON.

MILKING MACHINE.

APPLIGATION FILED Nov. 2, 1911.

1,048,481 Patented Dec. 31, 1912.

STATES PATENT OFFICE.

BAxTEn m. AsLnKsoN, or SALEM, omo.,

' mame-MACHINE.

Specification of 'Letters Patent.

Patented Deo. 31, 1913.

Application tiled November 2, 1911. Serial No. 658,138.`

To all whom'ft may concern:

Be it known that I, 'BAXTER M. ASLAKSON,

-a citizen ofthe United States, and a resident' of Salem, in tthe countyof Columbiana and State of Ohio, have invented certain new. and usefulImprovements in Milkmg-Machines, of whichthe following is aspeclication.

My invention relates to milking machines.

and the object of my invention is to provide a milking cupffor usewith apump and co v operating mechanism which is adapted to create ararefaction within the'cup, which pump and mechanism forms no part.ofthe present invention.

Further objects of my invention will be l. hereinafter more fully setforth and the novel features of construction pointed out in the claims.4.

Referring to the drawings, Figurev 1 is a vertical sectional Aview4through a Inilking cup embodying my invention. Fig. 2 is an exteriorview of the milking cup. Fig. 3 is across section of the' cup on line 33 of Fig. l, and F ig. 4 is a cross sectional Viewr on line lv-4 of Fig.2 disclosing one of the expanding sacks in its expanded position.

A, indicates the cup body'which may be -made ofglass or some light metalsuch as aluminum and is of larger diameter at its upper end than at itslower, being` shaped somewhat like a cone and having its upper andlowerends initially open.4 Fitted to .Y the upper end of the cup A 1s asoft, elastic rubber ring B, the inner portion of which' .depends'ordips within the cup a short .dis-

r tube havin' tance and is adapted 'to embrace the teatB of tlie cow,and preventair from flowing through the ring within the-chamber C.

The cupl body is provided with a pluiv rality of annular rings I)-I)etc. located in alinement and one above the other thus pro' -vidingopenings E-E-e-E respectively, which are initially in 'opencommunication with the chamber C. "Sacks F-F-F respectively are heldinthe openings `E--E-E respectively'by inserting av tube Gin each 'ofthe openings'E and clamping' theopenends. ofthe sacksF betweenthe plugand the.. inner walls of the ringDJ Each-'of .the tubes" l G areprovidedwith openings Gf, the open? .ing inthe upper, tube ,being largervthang-the .opening in the adjacent tube and thejlowest the smallestopening., The 'lowerend o lthe cup is provided witha neck' portion Hover whichatube I is -iitted which ,T

tube extends to the pumping. mechanism heretofore lreferred to.

y.The .o eration `of the device is' asfol4 lows e pumping mechanism isarrangrd `to alternately create al partialvacuumi-ih" e cup chamberl Camounting to about 14; .inches of mercury, which when the lower endofthe cows teat is" placed Awithin fthe ring B',

draws the 'teat within the cup'asillustrated;

in Fig. 1 and vimmediately thereafter the air flowing through theopenings Grex" ands the saeks'F against-the teat 'and forciri 'the milkfrom the upper part; thereofisuc'cessively through the same. Thesuccessivefac-*f 'that the time the last-'sack has collapsed.

the vmilkhas again flowed fromfthe .udder and till the teat, sothatthenextrarefaction in the chamber C will cause-the sackFf to againexpand and .trapfmilk'ibelow. the

same to besuccessivelyjorced therefrom' @by the successive actions ofthe-lower sacks 'as will be readily'unders'tood. Thisalternate' suctionand atmosphericpressure inside' `the cup takes' place about 50 times,a., minute, The cup lacts in a perfectly natural-fwayff drawing lthemilkv resembling {.exaetly "the method ofthe calf which is 'suction-plusthe pressure with the gums,vand itisjjbelieved that any person skilledinthe artfwillhave noy difficulty in undestanding 'the' construcl. .tionand operation of this improved machine.-

.Having thus described. myinventioml.

claim'as new l.' A milking cupcomprisingc. body por' tion liaving'achamber therein-adapted' to 'receive the teat of a cowandtlietopp'ortion of which is .formed tov embrace said rteat Mld`Provided' y'with ai' plurality of jopeniiig fone side thereof,asackineach of saidopen lrugs A`having an air.- passageadaptedito e3#run v pand the"- same.A .againstsaid Iteat -Y to fore Y with- Q 'largerdiameter ng to the .adjacent milkV therefrom, .the opening llfea'din'in' the' upperv sack." bein' than the. opening. lead-i .Seck '5.132. Amilkngp comprising abody por;

tion of Which is formed to embrace said "'teatf and provided with a'plurality of open- .loc'ated in said opening,

vings iii one side thereof, a plurality of ex of which has a neck a tubefor each of saidl sacks which serves to hold same in said' openings, theupper of said tubes having a passage for air of larger area than thepansible sacks, each next adjacent tube, substantially. as set.

forth.

3. 1n a milking machine, a teat receiver having' a body portion, a topportion adapted to closely embrace the teat adjacent to Vits root, and aconnection at the bottom of the receiver adapted lto extend to an airezhausting apparatus, said body portion having a plurality of expansiblesacks arranged longitudinally thereof, said sacks being adapted toexpandagainst the teat and force the milk therefrom, said sacks being open tothe atmosphere through openings decreasing in size from the sack nearestthe top porti'onfto the sack nearest the bottom portion of the receiver.

4c. Amilking cup comprising a body portion having a chamber thereinadapted to receive the teat of a cow and provided With a plurality ofopenings arranged one above the other, a sack in each of said openingshaving an air passage adapted to expand the same against said teat toforce milk therefrom, the opening leading Within the upper sack being oflarger diameter than the opening leading to the adjacent sack.

5. A milking cup comprising a body portion having a chamber thereinadapted to receive the teat of a cow and the top end of which isprovided with a flexible portion 'formed to embracev said teat andprovided with a plurality of openings in onel Side thereof, a sack ineach of said openings having an air passage adapted to expand the sameagainst said teat to force milktherefrom, the opening leading Within theupper sack being of larger diameter than the opening leading to theadjacent sack.

Signed at Des Moines, in the county of Polk and State of Iowa., this24th day of October A. D. 1911.

BAXTER M. ASLAKSON.

Witnesses:

MARY WALLACE, Bassin E. DEAL.

